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首页> 外文期刊>Biology Bulletin >Role of δ_1 Opiate Receptors in Regulation of Contractility in Isolated Rat Heart during Normal Oxygenation and Ischemia/Reperfusion
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Role of δ_1 Opiate Receptors in Regulation of Contractility in Isolated Rat Heart during Normal Oxygenation and Ischemia/Reperfusion

机译:δ_1阿片受体在正常氧合和缺血/再灌注过程中对离体大鼠心脏收缩力的调节作用

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摘要

The experiments with the isolated rat heart demonstrated a significant decrease in reperfusion-induced damage of cardiomyocytes upon adding the selective δ_1 receptor agonist DPDPE (0.1 mg/l) to the per-fusion solution. On the contrary, no cardioprotective effect was observed for 0.5 mg/l concentration of the pep-tide or after its intravenous injection. Stimulation of the cardiac δ_1 opioid receptors by intravenous injection of 0.5 mg/kg DPDPE or its addition to the perfusion solution decreased myocardial contractility both under conditions of normal oxygenation and during reperfusion. Thus, the cardioprotective and negative inotropic effect of DPDPE is mediated by activation of the cardiac δ_1 opioid receptors.
机译:用离体大鼠心脏进行的实验表明,在灌注溶液中添加选择性δ_1受体激动剂DPDPE(0.1 mg / l)后,心肌细胞的再灌注诱导损伤显着降低。相反,对于浓度为0.5mg / l的肽或静脉注射后,未观察到心脏保护作用。在正常充氧条件下和再灌注过程中,通过静脉注射0.5 mg / kg DPDPE或将其添加到灌注溶液中刺激心脏δ_1阿片样物质受体,都会降低心肌的收缩力。因此,DPDPE的心脏保护作用和负性肌力作用是由心脏δ_1阿片受体的激活介导的。

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